THE Stephanie Seymour–Peter Brant divorce got even crazier Saturday night when the supermodel was issued a public-disturbance summons after she yanked the keys out of a Brant-hired security guard’s car, threw them in the bushes, and then used her Range Rover to block the driveway of the couple’s Greenwich, Conn., estate, Police Lt. Richard Cochran told The Post’s Dan Mangan. On Thursday, a Brant guard was busted for allegedly shoving Seymour. Cochran said Seymour since has hired her own guards. Brant’s rep, Howard Rubenstein, said Brant, who was in Europe, “was disappointed” by his wife’s actions.